It's about one-and-two-fifths times the number of Manned Flights to Space.

In other words, 427 is 1.37 times the count of a Manned Flights to Space, and the count of a Manned Flights to Space is 0.73 times that amount.

(2016 figures) (flights with at least 80km altitude; US, Russia, the Soviet Union, and China)Since the flight of the Vostok 1 in April, 1961, there have been a total of 312 manned spaceflights under the American, Russian, Soviet, and Chinese space programs. Furthermore, the space programs of the US, Russia, the Soviet Union, France, Argentina, and Iran have launched a total 32 monkeys (specifically rhesus, cynomolgus, and squirrel monkeys, macaques, chimpanzees) into space.

In other words, the count of Members of Parliament (The U.K.) is 1.5 times 427.

(a.k.a. MPs) (2016 figures) (formally "Members of the House of Commons of the Parliament of the United Kingdom of Great Britain and Northern Ireland")
There are 650 Members of Parliament in the U.K. The Commons Chamber in the Palace of Westminster only has seating for 427 members, so those arriving late to House debates must stay standing.